| 释义 |
The soil was exhausted from years of careless farming.多年来马虎草率的耕作耗尽了土壤的肥力。Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.蚯蚓吃下大量土壤，排出富有肥力、质地优良的腐殖质。Denitrifying bacteria reduce the fertility of the soil.脱氮菌会降低土壤的肥力。Traditional slash and burn farming methods have exhausted the soil.传统的刀耕火种农业方式耗尽了土地的肥力。 |